Sea-floor spreading:The process that continually adds new material to the ocean floor.
Mid-ocean ridge: The longest chain of mountains in the world
Sonar: A device that bounces sound wave off under water objects and then records the echoes of these sounds waves
Deep-ocean Trenches: A deep ocean trench( under water canyon) forms where the oceanic crust bends downward
Subduction: The process by which the ocean floor sinks beneath a deep ocean trenches and back into the mantle
Table of Contents
Sea-floor spreading
Vocabulary:
Sea-floor spreading:The process that continually adds new material to the ocean floor.
Mid-ocean ridge: The longest chain of mountains in the world
Sonar: A device that bounces sound wave off under water objects and then records the echoes of these sounds waves
Deep-ocean Trenches: A deep ocean trench( under water canyon) forms where the oceanic crust bends downward
Subduction: The process by which the ocean floor sinks beneath a deep ocean trenches and back into the mantle
Outline
*Subduction and Earth's Ocean
- Subduction in the pacific ocean
- Subduction in the Atlantic ocean
- Subduction
- The ocean floor sinks into trenches
*Evidence form sea floor spreading- Evidence from molten material
- evidence from magnetic stripes
- evidence from drilling samples
*Mapping the mid-ocean ridge- with sonar
*Subduction at deep ocean trenchesDiagram